Ventilator.



PATENED FEB. 11, 1908.

A. B. BBDELL & J. A. PANTER.

VBNTILATOR.

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ED STATES PATENT OFFICE.

ALVIN B. REDELL AND JOHN A. PANTER, OF CHICAGO, ILLINOIS, ASSIGNORS 'lONATIONAL VENTILATOR AND MFG. CO., OF CHICAGO, ILLINOIS, A CORPORATION OFILLINOIS.

VENTILATOR.

eresie.

Specification of Lettere Patent.

Patented Feb. 11, 1908.

Application 111ml Jennery 27. 1908. boi-iol No. 298.176.

To all whom it may comers.'

Be it known that we, ALVIN B. REDELL and Jenn A. PANTER, citizens of theUnited States, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful [In ovements inVentilatore, of which the fol owing is a specificatio-n.

This invention relates to ventilators, and it re ers 4articularly tothat class of ventilators'winxgi" are adapted to be placed within awindowframe or opening.

One. of the objects of the invention is the production of a ventilatorwhich may be ednsted in size to fit window frames of different widths.

Another object is the production of imvprovini means for preventing thepassage of or moisture between the ventilator and the window casing inwhich it is set.

A further object of the invention is the provision of means forautomatically controling the flow .of nir through the ventilator. Theinvention further relates to the varions features ofl improvementhereinafter oet forth.

' inthe accompanyi drawings, Figure 1 is a front elevation, part insection, of a ventilator embodying the eatures of our invention. Fig. 2is a horizontal sectional view through said ventilator, showing it inposition in a window frame. Fig. 3 is a vertical section throng-h saidventilator, taken on the plane of dotted line 3 3 of Fig. 2. Fig. 4 is aperspective view, partly in section, o a el' htl modiiied form of ourinvention.

t drawin s a refers to a window frame or casing, and to the guide stripsfor the lower window sash.

Each of the embodiments herein shown of our invention comprises a bodyportion 1 adapted to be set within a window casing and to rest upon thewindow sill beneath they lower sash. In this instance the body portion 1comy ises a front plate 2 and a rear plate 3, pre erabl of sheet metal,said plates raving integral i anges 4 at their u per and lower edges. Anupper rail 5 ani a lower rail 6 are fixed in any suitable way to each of:3e-.id platos at the upper and lower edges thereof. The u per rails 5are spaced apart :by a block 7 lying between the middle portions of saidrails, and said rails are secured together by means of screws passingthrough sind rails and block. The lower rails (i are spaced a art andfastened together in a similar way y means of a block 9 .and screws 10.

In order to adapt the ventilator to windows of different sizes, we makethe body portion 1 extensible in length by slidably mounting extensionmembers 11 between the ends of the plates 2 and 3 said blocks beingrabbeted as at 12, on both sides, at their upger and lower ends toreceive the rails 5 an 6. The means for moving the extension members 11toward and awa.' from each other, in order to alter the len f 1 of thebody rtion 1, will be describ later heroin.

pon the outer end of each of the blocks ixed e. finishing piece 13adapted to overlio the ends of the rails 5 and 6 and provide closed,finished ends for the body portion.

Suitable packin is provided at the upper and lower edges o the bodyportion 1, in order to pneven-t leakage of air or moisture around saidbody portion. In the presi..- instance, seid packing comprises stripsci" felt or other suitable material, attached to and extending the fulllength of the top and bottom rails 5 and 6, and shorter strips 15, yalso of felt, attached to the upper and lower edges of the extensionmembers 11 and the finishing pieces 13.

An o )ening 16 is formed in the rear pinto 3, whic opening is covered bya screen l? attached to said rear I late. A. hood '18, preferably ofsheet metal) and provided with oppositely-facing inlet o enings 19 andrigidly mounted upon t ie rear plate over the opening 16, the endportions of said 9o hood extending beyond the side margins of' theopenings 16. Ashuttcr 21 is pivotally mounted within the hood 18 at oneside ci' the opening 16 in position to ('.lose the inl-.ct owening 19,and a similar shutter .22 is provided at the other end of the hood 1bfor the inlet opening 2U. A sto 23 iixod upon one of the inner walls ofthe lood 18, is provided for each of said shutters .21 and 22, againstwhich said shutters are adapted to lie, in order to close the inletopenings l1) and 20. As shown in Fig. 2, the shutters 21 and 22 areconnected to move together' in such n. way that. when one is closed thcother shall be open. The means herein shown for 'thus 1o.: connectingsaid shutters comprises e. link pivot/all;v connected nt its oppositeendifI to said shutters.

In the front plate 2, opposite the opening 16, is formed an opening 25which is covered lll) :bv ahood 26mounted upon said front plate.

The hood 26 has an air outlet 27 covered by a. screen 28. A closure Y 29is pivotally mounted upon the hood 26 in osition to close the outletopening 27, said c osure havingside 30 .adapted to slide upon andfrictionally 'engage the outer side of the ends ,ofsaid-hood,l in orderto hold said closure l,in adjusted movement o stop projection `31 onsaid closure adapted position. The pivotal o ening the closure 29 islimite by a ,to-Lengagethe front wall of the hood 26.

The 'means for moving the extension members 11 toward and away from eachother, between the front and rear plates 2 and 3,

-. comprises in the. present embodiment a rack ij bar 32. pivotallymounted upon a bracket 33 fixed to'theinner edge of each member 11,

thefreo end of said rack bar lying within a horizontal opening 34 formedin the opposite v,extension member.

A shaft 35 has a rotavgtiveibearing at one end in a bar 36 fixed to arieirx'oif.the` upcper and lower rails 5 and 6. tite other'en said shaftis supported with- "abearing bushing 37 secured in the front qwellofthehood 26. Uon the shaft 35 is "riedalpinion 38 ada te to mesh with the l'fraoi'bars 32', a keeper oop 39 fixed to the bar l pinion-38. One endof the shaft 35 projects 'roventi lateral displacement or' said racclears vand holding them in mesh with the `r'sitilimove the extensionmembers 11 toward er sway from each other, dependi upon the direetion ofrotation. Any. suita le means .-may be provided for locking theextension members 11 in adjusted position; that herein shown comprises aratchet wheel 41 fixed upon the shaft 35 outside the hood 26, and a nswl42 pivotally mounted upon the bearin bushing 37 and adapted to engagethe teet of seid ratchet wheel.

When the ventilator is to be used in a comparatively wide` window, it isdesirable to provide sucli ventilator with a plurality of air-inletmeans' thus in Fig. 4 is shown an embodiment of the invention whichconiprises two sets of hoods 18 and 26, instead of one as in the formiirst described. In the form shown in Fig. 4 the shaft for actuatin thead'usting means is journaled at one en in the ont late 2.

In use, t e ventilator is placed in the window frame a in a verticalosition, with its ends lying between the guiiie strips b for the lowersash, and said sash lowered upon the ventilator. The ventilator isadjusted in length to fit the window by rotating the shaft 35 in theappropriate direction the shaft being locked, when the proper a justmentis obtained by the pawl 42 engagini the ratchet wheel 41. Air enters thehoo 18 through the inlet openings 19 and 20 thereof and passes throughthe screen 17, the

space between the adjacent ends of the extension members 11, and the o)eniny in the front plates 2, into the hooi 26, leaving said hood 26through the screened opening 27. T he passage oli3 air through theopening 27 may be cut oil` to a greater or less extent. as desired, bymeans of the pivoted closure 29. A sudden gust of wind is automaticallyrevented from passing through the ventiator by means of the shutters 21and 22. Assuming said shutters to occupy the positions shown in Fig. 2,a strong Vbreeze entering the hood 18 through the oicning 1S) wouldstrike the shutter 21 andl throw it against its stop 23, closing theopening l.) and preventinf the wind from causing a strong draft throughthe ventilator. 'lhe shutter 22, being connected with the shutter 21,would be opened to its fullest extent, allowing a gentle circulationthrough the ventilator b way of the opening 20. lf the wind shouh changein direction and enter the hood 18 through the inlet opening 20, itwould strike a ainst the inner face ol' the shutter 21 and orce it open,thereby closing the shutter 22.

While we have described our invention as applied to a panel intended tobe laced within a window casing and to be readily removable therefrom,it is obvious that various features of the invention are ap licable toventilators which are permanentiy installed in window openings andelsewhere. it is also clear that our invention may be modified andadapted in various other ways without departing from the spiritand'scope of the invention, wherefore we desire not to limit ourselvesto the precise details hereinbefore set forth.

We claim as our invention:

1. In a ventilator, in combination, a body portion comprising two' latesspaced a art; extension members sli ably niounte between and guided andsupported by said plates; packing members carried by said citensionmembers and extending through the space between said plates; and aventilator evice carried by said body iortion.

2. In a ventilator, in coin ination, a body portion com rising two)lates spaced apart, open s aces eing provided between thc upper anlower ed res of said plates; extension members slidab y mounted betweenand guided and supported by said plates; parts on said extension membersextending through said o en spaces; and a ventilator device carrie bysaid body portion.

3. A ventilator structure comprising two metal plates secured togethernear their` middle portions, open s aces being provided between theupper an( lower edges of thc outer portions o said plates; guiding meanson said lates; extension members slidably mounts upon said guidingmeans; and parte on'said extension members extending through said olpenspaces.

ventilator structure comprising two metal plates secured together neartheir middie portions; packing strips at the edges of said plates;extension members slidably mounted between and ded and supported by saidplates; andpft` 'ng strips carried by said extension mei. `we.

5. In a ventilator, in combination, a body portion com risin two sideplates' extension members sli able between said side plates; a rack barpivoted at one end to each of said extension members; a pinion adaptedto mesh with each of said racks; and means for rotating said pinion.

6. In a ventilator, in combination, a body portion comprising two sideplates, rails secured to the inner sides of said plates; extensionmembers slidable between said plates and-ada ted to be guided by saidrails; and means or"movin said extension members toward and, away omeach other.

7. In a ventilator, in combination, a body portion comprising two sideplates rails seonred to the edges of said side plates, extension membersslidable between the ends osaidlates and guided and supported by saidraisjand packing material attached to said rails and extension members.fza' ventilatonin combination, a body portion'comprising two sideplates; upper and lower rails fixed to said side plates; extensionmembers l 'ng between said plates and being rabbete to receive saidrails; fin- .v

ishing pieces on. said extension members closing the ends of said bodyportion; and means for moving said extension members.

9. In a ventilator, in combination, a body portion comprising two sideplates; two extension members slidable between said side lates; a rackbar ivoted at one end to thc inner end of each o said extension members,an o ening being formed in each extension mem er to receive the rack barupon the opposite extension member; a pinion adapted to mesh with bothof said rack bars; and means for rotating said pinion.

10. In a ventilator, in combination, a body portion; two extensionmembers slidably mounted in said body ortion; a shaft; supporting meansin said ody portion for said shaft; a pinion on said shaft; a rack barattached to each extension member and meslb ing with said pinion; and akeeper loop for reventin lateral displacement of said rack ars, and orholding them in mesh with said pinion.

GEORGE L. CmNnAHL.

